<template>
  <view class="cart-container" v-if="cart.length !== 0">
    <my-address></my-address>
    <view class="cart-titile">
      <uni-icons type="shop" size="18"></uni-icons>
      <text class="cart-titile-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
          <my-goods :goods="goods" :showRadio="true" :showNum ="true" @radio-change="radioChangeHandler" @num-change="numChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!-- 结算区域 -->
    <my-settle></my-settle>
  </view>
  <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="../../static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">购物车空空如也</text>
  </view>
</template>

<script>
  //导入自己封装的mixin模块
  import badgeMix from '@/mixins/tabbar-badge.js'
  //按需导入mapState辅助函数
  import { mapState,mapMutations } from 'vuex'
  export default {
    //将mixin混入到当前页面
    mixins: [badgeMix],
    data() {
      return {
        options: [{
            text: '删除',
            style: {
              backgroundColor: '#C00000'
            }
          }]
        
      };
    },
    computed: {
      //将购物车的数量映射到页面的消息数量
      ...mapState('m_cart', ['cart'])
    },
    methods: {
      // 将 m_cart 模块中的 updateGoodsState 方法映射到当前页面
      ...mapMutations('m_cart', ['updateGoodsState','updateGoodsCount','removeGoodsById']),
      
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        console.log(e)
        this.updateGoodsState(e)
       
      }
      ,
      // 商品的数量发生了变化
      numChangeHandler(e) {
        this.updateGoodsCount(e)
        
      },
      
      // 点击了滑动单元格
      swipeActionClickHandler(goods) {
      this.removeGoodsById(goods.goods_id) 
        },
        
      
    }
    
   
  
    
  }
</script>

<style lang="scss">
  .cart-titile {
    height: 40px;
    display: flex;
    align-items: center;
    font-size: 14px;
    padding-left: 5px;
    border-bottom: 1px solid #efefef;
    .cart-titile-text {
      margin-left: 10px;
    }
  }
  
  .cart-container{
    padding-bottom: 50px;
  }
  .empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 150px;
    .empty-img {
      width: 90px;
      height: 90px;
    }
    .tip-text {
      font-size: 12px;
      color: gray;
      margin-top: 15px;
    }
  }

</style>
